Relationship between Hip Internal Rotators and Back Extensor Endurance in Mechanical Low Back Pain

Background & Objective: Low back pain is a prevalent musculoskeletal disorder that often leads to mechanical alterations during various activities. A reduced range of hip rotation and decreased endurance of the paraspinal muscles are considered contributing factors to biomechanical low back pain. This study aims to examine the relationship between hip internal rotator flexibility and back extensor endurance in females aged 18-30 years experiencing biomechanical low back pain. Methodology: The study included 120 females aged 18-30 years, selected based on specific inclusion and exclusion criteria. Hip internal rotation range was assessed using a goniometer, while trunk extensor endurance was evaluated using the Biering-Sorensen test. Results: The results of Spearman's rank correlation coefficient test that there is a weak positive correlation between hip internal rotation (right) r = 0.101 and left (r = 0.063) with back extensor endurance and are not statistically significant (p > 0.05). Conclusion: This study demonstrated that there is no significant relationship between hip internal rotation and back extensor endurance in individuals with mechanical low back pain.